x = int(input())

if x >= 400 and x <= 599:
    print('8')
elif x >= 600 and x <= 799:
    print('7')
elif x >= 800 and x <= 999:
    print('6')
elif x >= 1000 and x <= 1199:
    print('5')
elif x >= 1200 and x <= 1399:
    print('4')
elif x >= 1400 and x <= 1599:
    print('3')
elif x >= 1600 and x <= 1799:
    print('2')
elif x >= 1800 and x <= 1999:
    print('1') x = int(input()) x int(input()) int input() input if x >= 400 and x <= 599:
    print('8')
elif x >= 600 and x <= 799:
    print('7')
elif x >= 800 and x <= 999:
    print('6')
elif x >= 1000 and x <= 1199:
    print('5')
elif x >= 1200 and x <= 1399:
    print('4')
elif x >= 1400 and x <= 1599:
    print('3')
elif x >= 1600 and x <= 1799:
    print('2')
elif x >= 1800 and x <= 1999:
    print('1') x >= 400 and x <= 599 x >= 400 x 400 x <= 599 x 599 print('8') print '8' elif x >= 600 and x <= 799:
    print('7') x >= 600 and x <= 799 x >= 600 x 600 x <= 799 x 799 print('7') print '7' elif x >= 800 and x <= 999:
    print('6') x >= 800 and x <= 999 x >= 800 x 800 x <= 999 x 999 print('6') print '6' elif x >= 1000 and x <= 1199:
    print('5') x >= 1000 and x <= 1199 x >= 1000 x 1000 x <= 1199 x 1199 print('5') print '5' elif x >= 1200 and x <= 1399:
    print('4') x >= 1200 and x <= 1399 x >= 1200 x 1200 x <= 1399 x 1399 print('4') print '4' elif x >= 1400 and x <= 1599:
    print('3') x >= 1400 and x <= 1599 x >= 1400 x 1400 x <= 1599 x 1599 print('3') print '3' elif x >= 1600 and x <= 1799:
    print('2') x >= 1600 and x <= 1799 x >= 1600 x 1600 x <= 1799 x 1799 print('2') print '2' elif x >= 1800 and x <= 1999:
    print('1') x >= 1800 and x <= 1999 x >= 1800 x 1800 x <= 1999 x 1999 print('1') print '1' x = int(input()) int(input()) x
x = int(input())

if x >= 400 and x <= 599:
    print('8')
elif x >= 600 and x <= 799:
    print('7')
elif x >= 800 and x <= 999:
    print('6')
elif x >= 1000 and x <= 1199:
    print('5')
elif x >= 1200 and x <= 1399:
    print('4')
elif x >= 1400 and x <= 1599:
    print('3')
elif x >= 1600 and x <= 1799:
    print('2')
elif x >= 1800 and x <= 1999:
    print('1')